.page-faq {
  --faq-index-w: 244px;
  --faq-gap: clamp(18px, 3vw, 34px);
  --faq-text: rgba(242, 235, 221, .84);
  --faq-muted: rgba(207, 199, 183, .74);
  background: var(--deep);
  color: var(--paper);
  padding-bottom: clamp(48px, 7vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: calc(var(--header-h) + clamp(26px, 6vw, 62px));
  padding-bottom: clamp(26px, 5vw, 50px);
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .crumbs {
  margin-bottom: clamp(18px, 3.5vw, 34px);
  font-size: 13px;
  color: var(--faq-muted);
}

.page-faq .crumbs a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-hero__lead .eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0 0 clamp(14px, 2.4vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(31px, 5.6vw, 60px);
  line-height: 1.1;
  letter-spacing: -.022em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq h1 em {
  font-style: normal;
  color: var(--signal);
  box-shadow: inset 0 -.14em 0 rgba(255, 106, 42, .26);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.82;
  color: var(--faq-text);
}

.page-faq .faq-hero__board {
  background: var(--panel);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  padding: clamp(14px, 2.4vw, 22px);
}

.page-faq .faq-hero__board-title {
  margin: 0 0 13px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-meta {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-meta > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--line-dark);
}

.page-faq .faq-meta > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-meta dt {
  font-size: 13px;
  color: var(--faq-muted);
}

.page-faq .faq-meta dd {
  margin: 0;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--paper);
  text-align: right;
}

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }
}

/* ---------- 索引 + 正文两栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
  padding-top: clamp(28px, 5vw, 58px);
}

.page-faq .faq-index {
  border: 2px solid var(--line-dark);
  background: rgba(16, 42, 68, .58);
  padding: 13px 14px 15px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 11px;
  border: 2px solid var(--line-dark);
  background: var(--panel);
  color: var(--paper);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--signal);
  background: #16395c;
}

.page-faq .faq-index__list .num {
  font-size: 10.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    overflow-x: visible;
  }

  .page-faq .faq-index__list a {
    white-space: normal;
  }
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-sec {
  padding-block: clamp(26px, 4.5vw, 52px);
  border-top: 1px solid var(--line-dark);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .faq-sec__no {
  flex: 0 0 auto;
  padding-bottom: 2px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--signal);
  border-bottom: 2px solid var(--signal);
}

.page-faq .faq-sec h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.1vw, 31px);
  line-height: 1.24;
  letter-spacing: -.012em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-sec__intro {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-text);
}

.page-faq .faq-sec__intro + .faq-sec__intro {
  margin-top: -4px;
}

/* ---------- 四步路径 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps__list li {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  border: 2px solid var(--line-dark);
  background: var(--panel);
  box-shadow: 6px 6px 0 rgba(3, 10, 18, .45);
}

.page-faq .faq-steps__list li:nth-child(3) {
  border-color: rgba(255, 106, 42, .62);
}

.page-faq .faq-steps__list li:nth-child(4) {
  border-color: rgba(255, 194, 75, .5);
}

.page-faq .faq-steps__no {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  font-size: 14px;
  color: var(--cyan);
}

.page-faq .faq-steps__list li:nth-child(3) .faq-steps__no {
  border-color: var(--signal);
  color: var(--signal);
}

.page-faq .faq-steps__list li:nth-child(4) .faq-steps__no {
  border-color: var(--amber);
  color: var(--amber);
}

.page-faq .faq-steps__list h3 {
  margin: 2px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-steps__list p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--faq-text);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: 2px solid var(--line-strong);
  background: var(--night);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 2px solid var(--line-dark);
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--paper-dim);
}

@media (min-width: 820px) {
  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }
}

/* ---------- 入口标签矩阵 ---------- */
.page-faq .faq-tags {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.page-faq .faq-tag {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 15px 16px;
  border: 2px solid var(--line-dark);
  background: var(--panel);
  box-shadow: 5px 5px 0 rgba(3, 10, 18, .42);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-tag:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.page-faq .faq-tag__state {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--faq-muted);
}

.page-faq .faq-tag__state::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c, var(--cyan));
  box-shadow: 0 0 0 3px rgba(57, 230, 208, .14);
}

.page-faq .faq-tag--cyan { --c: var(--cyan); }
.page-faq .faq-tag--signal { --c: var(--signal); }
.page-faq .faq-tag--amber { --c: var(--amber); }
.page-faq .faq-tag--green { --c: var(--green); }
.page-faq .faq-tag--paper { --c: var(--paper-dim); }

.page-faq .faq-tag h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-tag p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--faq-text);
}

/* ---------- 小屏章节 ---------- */
.page-faq .faq-narrow {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-narrow__text {
  min-width: 0;
}

.page-faq .faq-footbar {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  padding: 14px 16px;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--line-paper);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-footbar__ver {
  padding: 2px 8px;
  border-radius: var(--radius);
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
}

.page-faq .faq-footbar__time {
  font-size: 13px;
  letter-spacing: .02em;
  color: rgba(7, 16, 24, .74);
}

.page-faq .faq-footbar__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--faq-muted);
}

@media (min-width: 860px) {
  .page-faq .faq-narrow {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: start;
  }
}

/* ---------- 旧版资料 ---------- */
.page-faq .faq-archive {
  display: grid;
  gap: 14px;
}

.page-faq .faq-archive__col {
  padding: 16px 18px 18px;
  border: 2px solid var(--line-dark);
  background: var(--panel);
}

.page-faq .faq-archive__col h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--cyan);
}

.page-faq .faq-archive__col p {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--faq-text);
}

.page-faq .faq-archive__col ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 7px;
}

.page-faq .faq-archive__col li {
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--faq-text);
}

.page-faq .faq-archive__col li::marker {
  color: var(--signal);
}

.page-faq .faq-archive__tip {
  margin: 14px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--faq-muted);
}

.page-faq .faq-archive__tip a,
.page-faq .faq-acc__after a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 230, 208, .45);
}

.page-faq .faq-archive__tip a:hover,
.page-faq .faq-archive__tip a:focus-visible,
.page-faq .faq-acc__after a:hover,
.page-faq .faq-acc__after a:focus-visible {
  border-bottom-color: var(--cyan);
}

@media (min-width: 720px) {
  .page-faq .faq-archive {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 反馈清单与问答 ---------- */
.page-faq .faq-checklist {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-checklist li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 194, 75, .08);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--faq-text);
}

.page-faq .faq-checklist .num {
  font-size: 12px;
  font-weight: 700;
  color: var(--amber);
}

.page-faq .faq-acc {
  display: grid;
  gap: 10px;
}

.page-faq .faq-acc details {
  border: 2px solid var(--line-dark);
  background: var(--panel);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-acc details[open] {
  border-color: var(--signal);
}

.page-faq .faq-acc summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-acc summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-acc summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-acc details[open] summary::after {
  content: "−";
  color: var(--signal);
}

.page-faq .faq-acc summary:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: -3px;
}

.page-faq .faq-acc details p {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--faq-text);
}

.page-faq .faq-acc__after {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--faq-muted);
}

/* ---------- 相关入口 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 8px;
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: clamp(22px, 3.4vw, 34px);
  border-top: 2px solid var(--line-strong);
}

.page-faq .faq-next a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 16px;
  border: 2px solid var(--line-dark);
  background: transparent;
  color: var(--paper);
  font-size: 14.5px;
  text-decoration: none;
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-next a:hover,
.page-faq .faq-next a:focus-visible {
  border-color: var(--signal);
  background: var(--panel);
  color: var(--signal);
}

.page-faq .faq-next .num {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
}

@media (min-width: 640px) {
  .page-faq .faq-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-next {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tag,
  .page-faq .faq-next a,
  .page-faq .faq-index__list a {
    transition: none;
  }

  .page-faq .faq-tag:hover {
    transform: none;
  }
}